We present an application that automatically writes the Helas (HELicity Amplitude Subroutines) library corresponding to the Feynman rules of any quantum field theory Lagrangian. The code is written in Python and takes the Universal FeynRules Output (Ufo) as an input. From this input it produces the complete set of routines, wave-functions and amplitudes, that are needed for the computation of Feynman diagrams at leading as well as at higher orders. The representation is language independent and currently it can output routines in Fortran, C++, and Python. A few sample applications implemented in the MadGraph 5 framework are presented. © 2012 Elsevier B.V. All rights reserved.
De Aquino, P., Link, W., Maltoni, F., Mattelaer, O., Stelzer, T. (2012). ALOHA: Automatic libraries of helicity amplitudes for Feynman diagram computations. COMPUTER PHYSICS COMMUNICATIONS, 183(10), 2254-2263 [10.1016/j.cpc.2012.05.004].
ALOHA: Automatic libraries of helicity amplitudes for Feynman diagram computations
Maltoni, Fabio;
2012
Abstract
We present an application that automatically writes the Helas (HELicity Amplitude Subroutines) library corresponding to the Feynman rules of any quantum field theory Lagrangian. The code is written in Python and takes the Universal FeynRules Output (Ufo) as an input. From this input it produces the complete set of routines, wave-functions and amplitudes, that are needed for the computation of Feynman diagrams at leading as well as at higher orders. The representation is language independent and currently it can output routines in Fortran, C++, and Python. A few sample applications implemented in the MadGraph 5 framework are presented. © 2012 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
